KR960005538B1 - Conveyor of connected carriages - Google Patents

Abstract

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Description

Balance linked conveyor

1 is a plan view of the baggage line to which the conveyor is applied when the balance connection of the present invention,

2 is an enlarged perspective view of the article delivery point to the baggage line of the present invention,

3 is an enlarged perspective view of an article unloading point on the baggage line of the present invention,

4 is a cross-sectional view taken along line 4-4 of FIG.

5 is a side view of the transport roller of the present invention,

6 is a plan view of the balance of the present invention,

7 is a plan view of the connector in the connected state of the present invention,

8 is a cross-sectional view of the connector in the connected state of the present invention;

9 is a plan view of the connector in the separated state of the present invention,

10 is a cross-sectional view of the connector in the disconnected state of the present invention;

11 is a perspective view of a drive mechanism of a transporting roller of the present invention;

12 is a perspective view of a low pin bogie of the drive device of FIG. 11;

13 is a cross-sectional view of the driving mechanism of the returning roller of the present invention;

14 is a side view of the returning row of the present invention,

15 is a front view of the traverser of the present invention,

16 is a plan view of the traverser of the present invention,

17 is a plan view of the attraction device of the present invention,

18 is a front view of the connection / disconnection device of the present invention,

Fig. 19 is a side view of the connecting and separating device of the present invention.

* Explanation of symbols for main parts of the drawings

C: Coil F: Bottom

1: Import Conveyor 2: Export Conveyor

3: traverse trolley 4: traverse trolley

5, 6: coil carrying device 7: automatic equipment

10: packing line 11: cart connection conveyor

12: Road Rod 13: Transverser

14: Return to the Law 15: Traverser

20: work bench 21: pillar

22: pedestal 23: rail

24: Returning Roud 30: Balance

31: rectangular frame 32: wheel

33: brace 34: rubber

35: projection 36: opening

40, 50: connector 41, 42: protrusion

43: cylindrical projection 44: slit

45: groove 46: vertical pin

47: horizontal pin 51: protrusion

52: protrusion piece 53: connection piece

54: stop rotation 56: vertical pin

60: drive device 61: hydraulic cylinder

62: operating rod 63: tow pin bogie

64: rectangular frame 65: wheel

66: Toe Pin 68: Channel Material

70: drive device 81: transverse movement table

82: lifting frame 83: lifting mechanism

84: rail 85, 85 ': attracting mechanism

86: hydraulic cylinder 87: rectangular frame

88: cam 90, 100: connection, disconnecting device

91: fixed frame 92: movable frame

93: hydraulic cylinder 94: opening and closing clipper

95: rotary actuator 96: rotary actuator

97: support point 98: open / close arm

99: hole

The present invention relates to a trolley-type conveyor for conveying a heavy object with high stopping accuracy.

More specifically, the present invention relates to a trolley-type conveyor that can be used for packing lines of coils (up to 30 tons) in steel mills, and can be used to convey pitches of coils to an automatic device such as a packaging machine with increased stop accuracy.

Conventional coil conveying means includes a chain conveyor method and a working beam method.

In the former, the driving means is a chain.

Therefore, the stop position accuracy of the coil depends on the elongation of the chain.

Therefore, the relative positioning apparatus of the trolley | bogie and automatic equipment was needed separately.

The latter is adapted to proceed by raising and lowering the conveyor itself onto the transport door. Therefore, there was a risk of damaging the coil, which is undesirable from the viewpoint of maintaining product quality.

In addition, both require a number of devices of various kinds beneath the conveying roller face of the coil. That is, in the chain conveyor system, a chain and a driving device thereof circulating in the vertical plane are required, and in the working beam system, a driving device and a hydraulic device for moving the coil are required.

Therefore, there exists a problem that the conveyance position of a coil becomes high from a floor surface, and equipment cost becomes high.

There are also conveyors in which a pit is formed on the bottom surface in order to lower the conveyance device of the coil. However, such a conveyor also has a problem in that equipment costs are high.

An object of the present invention is firstly to provide a conveyor with high stopping accuracy, and secondly to provide a conveyor which is easy to convey and does not damage the conveyed article, and thirdly, to provide a conveyor having a low conveyed position of the conveyed article. It is to do.

According to a first aspect of the present invention, a plurality of trucks connected to each other by a transport roller and a connector formed at the front and rear ends thereof are fixed to and attached to the transport roller to be free to hang or peel off with at least one truck on the transport roller. A trolley-type conveyor is provided which has a drive device which is engaged to reciprocate with a constant pitch.

The drive selectively engages with at least one bogie. That is, when moving from the starting point of the reciprocating motion, the driving device and the bogie are engaged with the bogie, and the bogie is conveyed on the conveyance log wood at a constant pitch.

Since each bogie is connected to each other on the transport roller by a connector, when one bogie is transferred, all preceding and subsequent bogies are also transferred at a constant pitch.

When the drive completes its movement from the starting point, the drive and the bogie are disengaged, and then the drive moves back and returns to its original position.

The following bogie is waiting for the return position of the drive unit. By repeating the reciprocating motion of the drive, the trolleys are conveyed on the conveyance roller at a constant pitch. In this way, the cart is stopped by the driving device in a very precise position.

In addition, since the preceding and subsequent bogies are connected to the transferred bogies, the same can be stopped at the correct position.

In the conveyor according to the first aspect of the invention, the second invention is provided between a returning row formed separately from the transporting loom, and between an end point of the transporting wheel and a starting point of the returning wheel. A traverser formed between a traverser, a starting point of the transporting loin and an end point of the returning loow, and separating the bogie from a subsequent bogie at the end of the transporting loom, and At the start of the wood there is provided a trolley conveyor having a connection separator for connecting to the preceding trolley.

In the second aspect of the present invention, the trolley is configured to circulate substantially flat.

A trolley is used to convey heavy loads, but its trolleys must be returned to the starting point from the end of the transport door.

That is, the trolley separated at the end of the transport roller is moved by the traverser to the backwood, moving the backwood, and by the traverser from the end of the backwood to the starting point of the backwood. Transferred.

In this way, the trolley is always supplied with bogies.

Since the conveyance log and the return row are formed in a substantially planar shape, and the driving device is disposed in the conveyance log, the trolley is conveyed at a position not too high from the bottom surface.

The third invention of the conveyor according to the second invention is characterized in that the conveying rod is disposed in substantially the same plane as the work table, and the return rod is disposed below the work table, so that the traverser is provided with the lifting device. A trolley-connected conveyor is provided which is capable of transferring the trolley from the transport ward to the returning ward.

In such a conveyor, the trolley | bogie which receives work | work with an automatic machine etc. is conveyed on a work bench.

The trolley is immersed at the top of the work platform by the traverser at the end of the transport log and is transferred to the returning log, which is transported under the work platform toward the start of the transport log.

The bogie appears at the work object by the traverser at the starting point of the transport door.

Therefore, the return of the trolley is free of the setting of the return speed, whereby the risk does not increase and the operation of the work target is not disturbed by the return.

In addition, the worktable can be effectively utilized.

EXAMPLE

The present invention can be usefully used as a heavy conveyor. Hereinafter, an embodiment will be described taking a conveyance conveyor for coils in an ironworks.

1 is a plan view of the trolley-type conveyor 11 of the present invention.

Reference numeral 10 is a packing line of the coil.

In the packing line 10, various automatic devices 7 for packing the coil C are formed.

(1) is an import conveyor, and (2) is an export conveyor.

The transverse trolley | bogies 3 and 4 which carry | coil the coil C on the carry-in conveyor 1 and the carry-out conveyor 2 run. The carry-in conveyor 1 is arrange | positioned at right angle to one end of the packing line 10, and the carry-out conveyor 2 is arrange | positioned at the other end of the packing line 10 at right angles.

Between the carry-in conveyor 1 and the bagging line 10, the coil carrying apparatus 5 for carrying in the coil C is formed.

Between the packing line 10 and the carrying out conveyor 2, the coil conveying apparatus 6 for lowering the coil C is formed.

FIG. 2 is an enlarged view of the point where the coil C is sent from the loading conveyor 1 to the packing line 10, and FIG. 3 is the coil C from the packing line 10 to the loading conveyor 2, FIG. It is an enlarged view of the falling point of).

The coil C loaded on the transverse trolley 3 traveling on the carry-in conveyor 1 is sent to the bagging line 10 by the coil carrying apparatus 5.

The coil C processed by the automatic device 7 on the bagging line 10 is lowered to the transverse trolley 4 which travels on the carry-out conveyor 2 by the coil carrying apparatus 6.

And the coil C is sent to the next process.

The processing line like the bagging line 10 is not only shown in FIG. 1, but is formed in multiple numbers between the carry-in conveyor 1 and the carry-out conveyor 2. As shown in FIG.

The coil C on the transverse trolley 3 traveling the carry-on conveyor 1 is sent to a designated line to receive a predetermined machining.

The conveyor formed in the bagging line 10 is a trolley-type conveyor 11.

The trajectory of the trolley-type conveyor 11 is an endless track consisting of the conveying door 12, the traverser 13, the returning door 14, and the traverser 15.

The bogie 30 circulates in its orbit.

Moreover, the trolley | bogie 30 is pitch-feeded by the drive apparatus 60 mentioned later in order to receive the process from the automatic machine 7 in the conveyance roller 12. As shown in FIG. The difference is equal to the length of one of the carts 30.

The trolley | bogie 30 is free to connect and isolate | separate each other.

The trolley | bogie 30 is connected and conveyed to the conveyance log 12 from the starting point S _C to the end point T _C.

At the end point T _C , the trolley 30 separated from the following trolley is moved onto the traverser 13.

Next, the trolley | bogie 30 is moved by the traverser 13 to the starting point S _R of the backwood 14 returning.

The trolley | bogie 30 sent to the end point T _R of the return 14 is moved to the traverser 15. As shown in FIG. The trolley | bogie 30 is moved by the traverser 30 to the starting point S _C of the carrying furnace 12.

At the starting point S _R , the trolley 30 is connected to the preceding trolley and again travels on the transporting wheel 12. In this way, the balance 30 circulates.

In addition, the length of the trolley | bogie group connected to the conveyance log 12 is rather shorter than the length of the conveyance log 12, and the trolley | bogie 30 is started at the starting point S _C of the conveyance log 12. Is drawn by the traverser 15 and connected to the preceding trolley, and at the end point T _C of the transport door 12, it is separated from the subsequent trolley and drawn into the traverser 13.

Therefore, the trolley | bogie 30 in the conveyance roller 12, the trolley | bogie 30 in the traverser 13, and 15, and the trolley | bogie 30 in the return roller 14, Independent operations are performed respectively.

Hereinafter, the trolley-type conveyor 11 of the present invention, first, the transporting wheel 12 and the returning wheel 14, second, the cart 30 and the connector 40, 50 of the bogie, third, bogie ( Drive device 60, 70 of the 30. Fourth, the connections 13 and 15 of the traverser 13, 15 and the couplings 40 and 50 of the trolley 30 Explain in order.

(Carrying rod and returning rod)

As shown in FIGS. 4 and 5, the work table 20 of the packing line 10 is higher than the bottom surface.

The work bench 20 is supported by the pillar 21. The transporting roller 12 is formed between the two work benches 20 and 20, and the returning wheel 14 is formed below the work bench 20. As shown in FIG.

On the other hand, the return 14 is formed by the rails 24 and 24 of two rows formed in the bottom F. As shown in FIG.

The trolley | bogie 30 returns on this rail 24,24.

Therefore, the ground height of the work bench 20 is sufficient if the height of the rails 24 and 24 and the height to which the trolley | bogie 30 returns can be ensured.

The conveyance lock 12 is formed by a pedestal 22 formed on the bottom F and two rows of rails 23 and 23 fixed to the pedestal 22.

The height of the base 22 is determined so that the upper surface of the trolley | bogie 30 which travels on the rails 23 and 23 of the conveyance roller 12 may correspond with the upper surface of the work bench 2. As shown in FIG.

In this way, the height of the work table 20 can be set low enough to require the heights of the rails 24 and 24 and the trolley 30 of the transporting roller 12, and thus the strength is not required very much. It is cheap.

In addition, since only the coil C to be processed moves on the worktable 20, the worktable 20 can be widely used, and it is safe for the worker because there is no other movement.

In addition, the conveyance roller may be disposed in the same horizontal plane as the return roller, and may be a conveyor.

Conveyor having such a structure is formed between the conveyance roller and the return roller between the three work benches. Only two rows of rails each form a conveyance and a return lock.

Since the returning rod is not formed under the work bench as in the above embodiment, the ground height of the work bench can be set lower.

In addition, the strength of the work table is not so required.

(Connector of bogie and bogie)

As shown in FIGS. 4 to 6, the trolley 30 includes a rectangular frame 31, a wheel with a flange supported on both sides of the front and rear sides of the rectangular frame 31, and a rectangular frame 31. Prop 33 for loading the coil (C) formed on the upper surface of the), the projection 35 formed on the lower surface of the rectangular frame 31, and the connector 40 formed on the front and rear ends of the rectangular frame 31 Has 50 and

The brace 33 is inclined toward the center so that the coil C can be safely transported.

The rubber 34 is attached to the upper surface of the brace 33 so that the coil C will not be scratched.

The projection 35 is shaped like a "C" with an opening 36 facing down.

The drive device 60,70 mentioned later engages with the protrusion 35, and the trolley | bogie 30 is driven.

Both edges of the opening 36 are chamfered.

7 to 10 show the connectors 40 and 50.

A female connector 40 is formed at the front end of the cart 30. At the rear end of the cart 30, a male connector 50 is formed. The relationship before and after the connector may be reversed. The female connector 40 is a pair of protruding pieces 41 and 42 spaced apart from each other up and down, a cylindrical protrusion 43 extending upwardly from the upper protrusion piece 41, and a cylindrical protrusion 43 ) Is made with a vertical pin (46).

Each of the protrusion pieces 41 and 42 is formed with a hole aligned with the cylindrical protrusion part 43.

The vertical piece 46 has a horizontal pin 47 protruding horizontally.

The cylindrical protrusion 43 has a pair of slits 44 and 44, and the horizontal pin 47 is fitted with these slits 44 and 44 so that it may fit.

The grooves 45 and 45 on the upper surface of the cylindrical protrusion 43 are recesses for repositioning the horizontal pins 47, and for maintaining the vertical pins 46 separated from the protrusions 42. will be.

The male connector 50 includes a pair of protruding pieces 51 and 52 separated from each other up and down, vertical pins 56 penetrating through holes formed in the protruding pieces 51 and 52, and protruding. It has the connecting pin 53 axially supported by the vertical pin 56 between pieces 51 and 52. As shown in FIG.

The connecting piece 53 is allowed to flow slightly between the protruding pieces 51 and 52. Reference numerals 54 and 54 denote rotation stops of the connecting piece 53.

The connecting piece 50 also has a hole 55 for receiving the vertical pin 46 of the female coupler 40 at the front end.

7 and 8, when the connecting piece 53 of the male connector 50 is sandwiched between the protruding pins 41 and 42 of the female connector 40, and the vertical pin 46 is inserted. , Front and rear bogies are connected.

The preceding bogie and the subsequent bogie can bend each other in a horizontal plane about this vertical pin 46.

This configuration makes it possible to form a curve in the transport door 12.

9 and 10, the vertical pin 46 is removed and the vertical pin 46 is placed on the cylindrical protrusion 43. As shown in FIG.

When separating the trucks, the vertical pins can be removed.

(Drive device of the cart)

The drive device of the trolley 30 drives the trolley 30 in the apparatus 60 which can drive the trolley 30 as a whole in the conveyance roller 12, and the return wheel 14, respectively. There is an apparatus 70 for doing this.

11 shows the drive device 60 in the transport door 12.

The drive device 60 is arrange | positioned between the rails 23 and 23 of two rows of the conveyance lock 12. As shown in FIG.

It is preferable that the position is close to an automatic machine that requires the most positional accuracy.

The drive device 60 consists of a hydraulic cylinder 61 attached to the fixed side, such as a rail, and the tow pin bogie 63 attached to the operation rod 62 of the hydraulic cylinder 61. As shown in FIG.

The stroke of the hydraulic cylinder 61 is one length of the trolley | bogie 30. As shown in FIG.

As shown in FIG. 12, the tow pin bogie 63 has a rectangular frame 64, wheels 65 supported axially on both front and rear sides, and a line formed on the upper surface of the rectangular frame 64. As shown in FIG. It has a tow pin 66 of a drinking type, and the rotary actuator 67 which turns this tow pin 66. As shown in FIG.

The wheel 65 is guided by the channel material 68 formed between the rails 23 and 23. The tow pin 66 is of a size that can be fitted to the opening 36 of the protrusion 35 of the trolley 30.

The bogie 30 is driven by one pitch as follows.

The tow pin bogie 63 which matches the trolley 30 is integrated by the tow pin 66 by turning the tow pin 66 by 90 degrees, and engaging the opening 36 of the protrusion 35.

When the working rod 62 extends, the trolley 30 advances by one pitch.

When the tow pin 66 swings back to its original position, the tow pin bogie 63 and the bogie 30 are disengaged. Then, the operation rod 62 returns to its original position. This position is the position where the tow pin 66 and the protrusion of the bogie continuing from the next fit.

Since the trolley | bogie 30 is mutually connected on the carrying lock 12 by the connector 40 and 50 as mentioned above, by the operation of the hydraulic cylinder 61, the trolley | bogie 30 is 1 in whole. Advance as much as the pitch.

The drive unit 60 then drives the following cart simultaneously.

As this operation is repeated, the trolley trolley is transported at a constant pitch over the transport door 12. As a drive means, an electric motor is used as a drive source instead of the hydraulic cylinder 61.

So-called electric cylinders may also be used.

The drive device 70 in the return 14 is shown in FIGS. 13 and 14. This drive device 70 is a chain 72 that always has a drive dog 71.

The trolley | bogie 30 sent to the lock 14 returning from the traverser 13 conveys the projection 35 to the dog 71, and is conveyed immediately at high speed.

Since the trolley | bogie 30 is sent below the work bench 20, the work on the work bench 30 is not interrupted.

(Connector / Disconnector of Traverser and Truck)

As described above, the traversers 13 and 15 are formed between the transporting wheel 12 and the returning wheel 14. The traversers 13 and 15 are provided with the lateral moving base 81, the elevating frame 82, the elevating mechanism 83, and the elevating frame as shown in FIGS. 2, 3, and 15. Two rows of rails 84, which align with the rails 23, 23 of the transporting rollers 12, and the rails 24, 24 of the returning wheels 14 on the upper surface of 82; 84).

The space | interval is set as mentioned above between the trolley | bogie 30 on the conveyance roller 12, and the trolley | bogie 30 on the traverser 13 and 15.

Accordingly, the attracting mechanism 85 is provided at the traverser 15 at the start point S _C of the transport roller 12, and the traverser 13 at the end point T _C of the transport roller 12. Attraction mechanism 85 'is formed.

Thereby, at the starting point S _C , supply of the trolley | bogie 30 to the conveyance log 12 is made possible. At the end point T _C , the trolley | bogie 30 can be received from the conveyance log 12. As shown to FIG.

The trolley | bogie 30 carried in the traverser 13 and 15 transfers independently from the operation | movement of the trolley | bogie 30 of the conveyance log 12. As shown in FIG.

The pushing mechanism and the pulling mechanism have the same structure.

As shown in FIG. 16 and FIG. 17, the structure is the cam 88 formed on the rectangular frame 87 which moves back and forth by the hydraulic cylinder 86, and the rotary actuator which turns the cam 88. As shown in FIG. It is made with 89.

The trolley 30 is pushed out of the traverser 15 as the cam 88 pivots and engages with the protrusion 35 of the trolley 30 and the rectangular frame 87 moves forward and backward. To the traversal 13.

The coupling device 90 of the trolley is formed at the starting point S _C of the transporting lodge 12, and the separating device 100 is formed at the end point T _C of the transporting lodge 12.

The coupling device 90 is a device for connecting the trolley 30 pushed out by the pulling mechanism 85 from the traverser 15 to the preceding trolley, and the separating device 100 is a pulling mechanism ( 85 ') before cutting the trolley 30 into the traverser 13, the device for cutting the trolley 30 from a subsequent trolley.

The structure of the two devices is the same.

These apparatuses 90 and 100 have a fixed frame 91, a movable frame 92 that moves up and down relative to the fixed frame 91, and a movable frame (as shown in FIGS. 18 and 19). A hydraulic cylinder 93 for moving the cylinder 92 up and down, a rotary actuator 95 for swinging the swinging opening / closing clipper 94 formed on the movable frame 92, and a rotary actuator for opening / closing the opening / closing clipper 94. Has (96)

The opening / closing clipper 94 includes a pair of opening / closing arms 98 and 98 having support points 97 and 97 on the movable frame 92.

At the front end of the opening and closing arms 98 and 98, the vertical pin 46 of the female connector 40 is lifted and lifted, so that the trolley 30 can be easily connected or separated. will be.

The packing line 10 is comprised by each said apparatus, and conveyance of the coil C and circulation of the trolley | bogie 30 are performed.

Since the present invention is configured as described above, the following effects can be obtained.

A) Because the carts are connected to each other, the carts preceding and following the carts are also accurately transported by accurately transporting at least one cart. The center league device is also unnecessary.

B) By arranging the driving device at the position where the accuracy of relative stop position of trolley and magnetic equipment is required, articles such as coils loaded on the trolley can be processed accurately.

C) Since the goods are always loaded on the trolley and the drive device formed in the transporting wheel is moved in a reciprocating manner, the goods are transported, so that the goods are not damaged.

In addition, since the driving device is simple, it is good, and there is no need to install a complicated device on the floor or the like.

Therefore, installation on the floor is possible and the cost of equipment can be reduced.

D) In the balance type conveyor of Claim 2, since the trolley | flexion can be mutually bent in front of and behind a connector, a curve can be formed in a conveyance roller.

Claims (13)

Rail means arranged along the transporting wheels 12, a plurality of trolleys 30 arranged to travel on the rail means and supported by the rail means, and each trolley to connect the trolley 30 to each other. The connector 40, 50 provided at the front and rear end of the tow pin receiving means on each of the trolley 30, and can move a predetermined distance for the movement of the connecting trolley in the forward direction along the conveyance log 12 It comprises a drive means 60, the drive means 60 is a tow pin bogie 63, a means for reciprocating the tow pin bogie along a portion of the conveyance roller, and tow pin 66 And means for selectively using to engage or release the tow pin receiving means, when the tow pin receiving means is engaged with the tow pin 66, the tow pin bogie in the forward and reverse direction along the transport lock 12; Prevent relative movement of connecting cart As such, the connecting carts on the rail means in the transporting roller 12 are coupled to the towing pin receiving means and one of the towing pins of one of the connecting carts according to the movement of the towpin bogie. It is movable along, characterized in that the connection trolleys on the transport roller 12 is stopped by the movement of the tow pin bogie 63 upon release of the tow pin 66 from the tow pin receiving means. Balance linked conveyor. 2. The connector 40 of one end of each bogie 30 includes a vertical pin 46, each bogie 30 pivoting around the vertical pin 46 at one end thereof. Balance linked conveyor, characterized in that possible. 2. The device of claim 1, further comprising: means for providing a returning door 14 disposed parallel to the transporting door 12 and having a starting point and an end point; The first traverser 13 provided between the start point of the lowwood 14, the second traverser 15 provided between the other end of the conveyance wheel and the returning low end, and the trolley 30 It further comprises a connecting / separating means (90), 100 for separating the from the subsequent bogie at one end of the transport roller, and connecting one bogie to the preceding bogie at the other end of the transport roller Balance linked conveyor. 3. The device of claim 2, further comprising: means for providing a returning door 14 arranged parallel to said transporting door 12 and having a starting point and an end point; The first transporter 13 provided between the starting point, the second transporter 15 provided between the other end of the transporting wheel and the returning end of the returning wheel, and the bogie 30, A balance linked conveyor, further comprising connecting / separating means (90), (100) for separating one from the subsequent bogie at one end of the bogie and for connecting one bogie to the preceding bogie at the other end of the transport ward. According to claim 3, comprising a workbench 20 having an upper and lower surface, wherein the transport log 12 is at the same level as the work table, the heavy material supported by the trolley 300 in the transport log Located above the workbench and accessible from the top of the workbench, the returning wheel 14 being provided under the workbench, one of the traversing means being provided with the transporting wheel and returning row A cart-linked conveyor, comprising a lift mechanism (83) for transporting the truck from one of the carts to the other. 5. A heavy load according to claim 4, comprising a workbench 20 having an upper and a lower surface, wherein the transport loaf 12 is at the same level as the workbench and is supported by the trolley 30 in the transport loaf. Located above the workbench and accessible from the upper surface of the workbench, the returning wheel 14 being provided under the workbench, one of the traversing means being connected to the transporting wheel and back A cart linked conveyor, comprising a lift mechanism (83) for transporting the truck from one of the rows to the other. Means for providing a transporting wheel 12, a plurality of trucks 30 arranged to travel along the transporting wheels, and a connector 40 provided at the front and rear ends of each of the trucks to connect the trucks to each other; 50, a reciprocating drive means movable a predetermined distance for the movement of the connecting trolley in the forward direction along the conveyance lod 12, and arranged in parallel with the conveyance lod 12 and starting and end points. The branch is provided with a means for providing a returning log 14, a first traverser 13 provided between one end of the transporting log and the starting point of the returning logging, and a return to the other end of the transporting log. The second traverser 15 provided between the end points of the rowwood, and the bogie 30 are separated from the bogie following at one end of the carrying loin, and the preceding bogie at the other end of the carrying loin 12. Connect one bogie to And a work table 20 having upper and lower surfaces, and the transporting roller 12 is at the same height as the work table, A heavy load supported by the trolley 30 can be positioned above the workbench to access the heavy load from the top of the workbench, and the returning wheel 14 is provided under the workbench, A cart linked conveyor, characterized in that it comprises an elevating mechanism (83) for transporting the bogie from one of said carrying lodge and the returning loaf to the other. 8. The connector (40) of claim 7, wherein said connector (40) at one end of each bogie (30) comprises a vertical pin (46), each bogie being pivotable about said vertical pin (46) at one end thereof. Balance linked conveyor featured. 8. The method of claim 7, wherein one of the traversal means comprises: a rail means for receiving the trolley 30 and for selectively aligning the rail means with the transporting lorries 12 and the returning wheels 14; Balanced conveyor, characterized in that it comprises a means having a means for elevating the rail means. 10. The device of claim 9, wherein the returning wheels (14) are laterally away from the transporting wheels (12), and means for selectively aligning the rail means with the transporting wheels and the returning wheels. Balanced conveyor, characterized in that the movable side. Means for providing a transporting wheel 12, a plurality of trucks 30 arranged to travel along the transporting wheels, and a connector 40 provided at the front and rear ends of each of the trucks to connect the trucks to each other; (50), a reciprocating drive means capable of moving a predetermined distance for the movement of the connecting bogie in the forward direction along the conveyance lod; 14) a first traverser 13 provided between one end of the conveying loin and the starting point of the returning loow, the other end of the carrying loin and the end of the returning loout The second traverser 15 provided therebetween and the bogie 30 are separated from the bogie following at one end of the carrying loin, and one bogie is connected to the preceding bogie at the other end of the carrying loin 12. doing It is configured to include a connection / separation means for the 90, 100, the connector 40, 50 at the front and rear ends of each of the trolley 30, the front end of one bogie in front of the bogie A pin means having vertically movable at each end thereof connected to the rear end of the trolley which is carried by each bogie, being lifted when in the raised position and connected when it is in the lowered position; And means for selectively supporting the pin means in the raised position on each of the trolleys 30, wherein the connecting / disconnecting means 90, 100 are pin means on the trolley 30. Means adjacent to said one end of the conveying rod 12 to move to this raised position and to release the pin means from their support means to move the pin means to their lowered position. Including means adjacent to the other end Balance-connecting conveyor being configured. 12. A cylindrical projection (43) for receiving each of said vertically movable pin means, a horizontal pin (47) extending horizontally from each vertically movable pin means, and said horizontal pin being A first groove means in the cylindrical protrusion for accommodating the horizontal pin, the horizontal pin moving vertically to a lowered position when positioned therein, and the cylindrical for accommodating the horizontal pin 47 A second groove means in the upper projection, the second groove means being angularly deviated from the first groove means such that the horizontal pin means raises the vertically movable pin means and moves the vertically movable pin. By swinging the means around the vertical axis, it is possible to move from one slot means to another by lowering the vertically movable pin means. And the connecting / disconnecting means (90) and (100) comprise means for raising, swinging and lowering the vertically movable pin means. 12. A cylindrical projection (43) for receiving each of said vertically movable pin means, a horizontal pin (47) secured to each vertically movable pin means, and extending horizontally therefrom; A first groove means in the cylindrical projection for accommodating the transverse pins and the transverse pins 47 for accommodating the transverse pins when the pin is located therein and vertically movable to a lowered position; And a second groove means in the cylindrical projection, the second groove means being angularly deviated from the first groove means, so that the horizontal pin means raises the vertically movable pin means to move the vertically movable pin. By swinging the means around the vertical axis, it is possible to move from one slot means to another by lowering the vertically movable pin means. The connecting / disconnecting means (90) and (100) are connected to the horizontal pin (47), and are means for raising, swinging and lowering an assembly including the horizontal pin and the vertically movable pin means. Balanced linked conveyor, characterized in that configured to include.

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